Alarm system for people trapped in elevator car
By installing infrared transmitters and receivers in the elevator car in a point-to-point manner, combined with control devices and alarm systems, the problems of proactive operation and awareness of trapped personnel during elevator rescue are solved, enabling timely rescue notifications in case of elevator malfunction and improving elevator safety.
Patent Information
- Application Number
- CN202520629066.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing elevator rescue methods suffer from gaps in the proactive awareness of trapped individuals and the awareness of those being notified, resulting in the inability to issue rescue notifications in a timely manner. This is especially true when elevators malfunction, particularly when trapped individuals lack self-rescue awareness, their mobile phones are out of power, elevators are used infrequently, or there is a power outage. In such cases, rescue notifications cannot be effectively communicated.
Infrared transmitters and receivers are installed point-to-point inside the elevator car, combined with control devices, on-site alarms, and external remote alarm systems. They are connected to the elevator control MCU via CAN communication to automatically determine if there are people inside the car, ensuring timely rescue notifications in case of malfunction.
It enables automatic detection of people inside the elevator car when an elevator malfunctions, and timely issuance of on-site and remote alarms, eliminating the loopholes in the proactive operation and awareness of trapped personnel and improving the safety performance of elevators.
Smart Images
Figure CN223950539U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to elevator safety field, concretely relates to a kind of elevator car inside trapped person alarm system. BACKGROUND
[0002] Many rescue methods exist for elevator failure and trapped people in car, such as rescue button in car, interface external mobile phone, interface Internet of Things monitoring system and the like. However, there are still cases of people being trapped for several days without rescue. The existence of such problems is due to the active operation cognition of trapped personnel and the awareness of notified personnel in the existing rescue methods.
[0003] Active operation cognition of trapped personnel: trapped personnel do not understand the rescue method of being trapped in car, and will press the button desperately due to emotional problems, resulting in button damage and failure to send rescue notification. Generally, this is because the mobile phone is not carried or the mobile phone is out of power, the frequency of elevator use scene is low, the flow is small, there is no on-site alarm prompt, or children lack self-help awareness to press the button or cannot press the rescue notification button at all. Many children do not have communication tools such as mobile phones.
[0004] Awareness of notified personnel: the notification receiving object is a monitoring security guard or an Internet of Things monitoring service center. However, the rescue notification may not be sent due to the cognition of trapped personnel, and the notification receiving object does not receive the rescue notification. Or the receiving object is not in the monitoring room, and the distance between the person and the receiving device is too far. When the elevator fails or the city power suddenly fails, the car is trapped, and the rescue notification relies on the emergency power supply at this time. Due to the emotional out-of-control of trapped people, they frantically seek help, and the object receiving the rescue notification leaves the receiving device for a long time. The standby battery is quickly consumed. When the rescue notification is returned by the receiving object, the elevator system rescue standby power supply has no power, and the rescue notification is missed.
[0005] For the above rescue loophole, a new rescue scheme is designed to eliminate the loophole and improve the safety performance of the elevator. CONTENT OF UTILITY MODEL
[0006] The utility model aims at overcoming the shortcomings of prior art, and provides an elevator car trapped person alarm system.
[0007] The technical scheme of the utility model is as follows:
[0008] The utility model provides an elevator car inside person alarm system, including infrared emitter, infrared receiver, control device, field alarm, external remote alarm system and elevator control MCU, infrared emitter and infrared receiver are equipped with a plurality of and opposite setting in the inside bottom of elevator car, a plurality of infrared emitter and a plurality of infrared receiver are in point -to -point pair of shot mode, control device and field alarm are set up on the ceiling of elevator car, the signal input end of control device is connected a plurality of infrared receiver, the signal output end of control device is connected field alarm and a plurality of infrared emitter respectively, control device is connected with external remote alarm system communication, control device is connected with elevator control MCU through CAN communication.
[0009] Further, the plurality of infrared emitters and infrared receivers are arranged at 100 mm from the bottom of the elevator car.
[0010] Further, the control device is internally provided with a backup battery.
[0011] Further, the elevator car inside person alarm system is further provided with an emergency power supply, which is connected with the power input end of the control device.
[0012] Compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with a plurality of infrared emitters and infrared receivers arranged in point-to-point pair of shot mode at the inside bottom of the elevator car, and a control device and a field alarm are arranged on the ceiling of the elevator car, the signal input end of the control device is connected with a plurality of infrared receivers, the signal output end of the control device is connected with the field alarm and a plurality of infrared emitters respectively, the control device is further connected with an external remote alarm system in communication, and the control device is connected with an elevator control MCU through CAN communication. When the elevator fails, the elevator control MCU notifies the control device through CAN, the control device controls the infrared emitter to perform infrared detection, when the receiving information of the infrared receiver is a full signal point, it indicates that there is no person in the elevator car and no object is placed, and the control device does not output the field alarm and the external remote alarm. When the number of non-receiving points does not change for more than 1 minute, it indicates that there is an object placed in the elevator car, and the control device also does not output the field alarm and the external remote alarm. When the non-receiving points change intermittently, it indicates that there is a person moving in the elevator car, and the control device outputs the field alarm and the external remote alarm. The utility model realizes timely alarm when a person is trapped in the elevator car during elevator failure, and improves the safety performance of the elevator. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to make the technical scheme in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0014] Figure 1 The system composition block diagram of the elevator car trapped person alarm system provided by the present application;
[0015] Figure 2 The elevator car structure schematic diagram of the elevator car trapped person alarm system provided by the present application;
[0016] Figure 3 The circuit schematic diagram of the elevator car trapped person alarm system provided by the present application;
[0017] Figure 4 The detection method flow chart of the elevator car trapped person alarm system provided by the present application. DETAILED DESCRIPTION
[0018] In order to make the technical scheme in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0019] In order to make the technical scheme in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0020] EMBODIMENT
[0021] Please refer to Figures 1 to 3The embodiment provides a trapped person alarm system in an elevator car, which comprises an infrared emitter 1, an infrared receiver 2, a control device 3, a local alarm 4, an external remote alarm system, an elevator control MCU and an emergency power supply. The infrared emitter 1 and the infrared receiver 2 are oppositely arranged at the bottom end of the inside of the elevator car 10, the infrared emitter 1 and the infrared receiver 2 are in a point-to-point shooting mode, the infrared emitter 1 and the infrared receiver 2 are arranged at a position 100 mm away from the bottom of the elevator car 10 in the embodiment, the control device 3 and the local alarm 4 are arranged on the ceiling of the elevator car 10, the signal input end of the control device 3 is connected with the infrared receiver 2, the signal output end of the control device 3 is connected with the local alarm 4 and the infrared emitter 1, the control device 3 is in communication connection with the external remote alarm system, the control device 3 is connected with the elevator control MCU through CAN communication, a backup battery is arranged in the control device 3, and the emergency power supply is connected with the power input end of the control device 3.
[0022] In combination Figure 4 As shown in the figure, the detection method is specifically as follows:
[0023] When the elevator normally operates, the elevator control MCU informs the control device 3 through CAN that the elevator normally operates, at this time, the control device 3 does not process the infrared signal of the infrared emitter and the infrared receiver, and does not output the local alarm and the external remote alarm.
[0024] When the elevator fails, the elevator control MCU informs the control device 3 through CAN, the control device 3 controls the infrared emitter 1 to perform infrared detection, when the receiving information of the shooting point of the infrared receiver 2 is a full signal point, it indicates that there is no person and no object in the elevator car 10, the control device 3 does not output the local alarm and the external remote alarm, when the number of non-receiving points does not change for more than one minute, it indicates that there is an object in the elevator car 10, and the control device 3 also does not output the local alarm and the external remote alarm, when the non-receiving points change intermittently, it indicates that there is a person walking in the elevator car 10, and the control device 3 outputs the local alarm and the external remote alarm.
[0025] The control device 3 can be set in multiple ways or multiple numbers for the external remote alarm. When a person is trapped, there is enough rescue notification surface, the numbers can be set to multiple receiving numbers, such as relatives, security guards, monitoring centers, 119 and the like, and there is also the local alarm 4, which greatly increases the rescue notification surface and makes the trapped information transmission, and eliminates the awareness leakage of the notified personnel. The control device automatically judges whether the elevator car is trapped, automatically issues a rescue notification, and eliminates the initiative operation awareness leakage of the trapped personnel.
[0026] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A person-trapped-in-elevator-car alarm system, characterized by: The elevator car trapped person alarm system comprises an infrared emitter, an infrared receiver, a control device, a local alarm, an external remote alarm system and an elevator control MCU, the infrared emitter and the infrared receiver are provided with a plurality of and are oppositely arranged at the inner bottom end of the elevator car, the plurality of infrared emitters and the plurality of infrared receivers are in a point-to-point and opposite radiation mode, the control device and the local alarm are arranged on the ceiling of the elevator car, the signal input end of the control device is connected with the plurality of infrared receivers, the signal output end of the control device is respectively connected with the local alarm and the plurality of infrared emitters, the control device is in communication connection with the external remote alarm system, and the control device is connected with the elevator control MCU through CAN communication.
2. The elevator car occupant alarm system of claim 1, wherein: The plurality of infrared emitters and the infrared receiver are arranged at a position 100 mm away from the bottom of the elevator car.
3. The elevator car occupant alarm system of claim 1, wherein: The control device is internally provided with a backup battery.
4. The elevator car occupant alarm system of claim 1, wherein: The elevator car trapped person alarm system is further provided with an emergency power supply, and the emergency power supply is connected with the power input end of the control device.